Answer:
Quantity demanded falls by 3.5 percent.
Explanation:
Given that,
Income elasticity of demand = +0.50
Price elasticity of demand = -0.15
Cross-price elasticity of demand = +0.35
price of services at St. Elsewhere falls by 10 percent
Therefore,
Cross price elasticity of demand = Percentage change in quantity demanded ÷ Percentage change in price
+0.35 = Percentage change in quantity demanded ÷ (-10%)
0.35 × (-10%) = Percentage change in quantity demanded
(-3.5%) = Percentage change in quantity demanded
Hence, the quantity demanded falls by 3.5%.